.header{
    width: 100%;
    height: 6%;
    background-color: #fff;
    text-align: center;
    position: fixed;
}
.progressBar{
    content: '';
    width: 0;
    display: block;
    background: skyblue;
    height: 2px;
    position: absolute;
    bottom: 0;
}
.title{
    font-size: 10px;
    line-height: 100%;
}
.main-group{
    width: 100%;
    padding-top: 50px;
    background:#ccc;
    line-height: 30px;
}
p {
    text-indent: 20px;
}